Process of making an elastic body-belting web.



J. JACOBS.

PROCES$ 0F MAKING AN ELASTIC BODY BELTING WEB. APPLICATION man JUNE 2|.m7.

L28@ 501, Patented Def. 24,1918.

l l Illlln will J. JA-COBS.

PROCESS 0F MAKING AN ELASTIC BODY BELTING WEB.

APPucATIoN FILED lune 21.1911.

l ,2,601 Patented Dec. 24, 1918.

3 SHEETS-SHEET 2.

J. JACOBS.

PROCESS 0F MAKLNG AN ELASTIC BODY BELTING WEB.

APPLICATION man :UNE 21.1917.

l ,288,601 Patented Dec. 24, 1918.

. a SHEETS-suur a'. I'f.

'aan sacarse naranja nien- JOSEPH JACOBS, OF NEW YORK, N. Y., ASSIGNORTO THE LIVEv LEATHER BELT COMPANY, A CORPORATIONIOE NEW YORK.

PROCESS OF MAKING .AN ELASTIC BODY-BELTING WEB.

Specification of Letters Patent.

Patented Deo. 24, i918.

Original application filed .Tune 30, 1915, Serial No. 37,161. Dividedand this application filed .Tune 2.1, 1917. Serial No. 176,040.

To all ywhom t may concern:

Be it known that I, JOSEPHUJAooBs, a citizen of the United States,residing at New York city, county of Bronx, and State of New York, haveinvented certain new and useful mprovements in Processes of Male ing anElastic Body-Belting Web, fully described and represented in thefollgwin specification and the accompanying draw` ings, forming a partof the same.

This invention relates to a process of makin an elastic body beltingweb.

he invention will first be described in connection with the accompanyingdrawings and then particularly pointed out in the claims.

In the drawings- .Figure 1 is a side elevation partly in section of anapparatus -for combining a casing web and an elastic web to produce abody belting web;

Fig. 2 adetail elevation'of the front part of the machine shown in Fig.l; y

Fig. 3 a detail plan view' of a part of the apparatus shown in Fig. 1;

l Fig. 4 a detail longitudinal section of the same;

Fig. 5 a detail elevation of the pressing rollers;

Fig. 6 a detail section of one form of crimping rollers, showing, on anexaggerated scale the manner of crimping the casing web and itscontained elastic web;

Fig. 7 a detail cross section of a completed body belting web;

Fig. 8 a similar view of the casing web showing one edge chamfered onlyon one side and the other edge chamfered on both sides;

Fig. 9 a front elevation of a completed body belt in its contractedcondition;

Fig. 10 a side view of the apparatus for applying adhesive to the innerside of the casing;

Figs. 1l and 12 are detail views showing a tank for applying adhesive toone chamfered edge only on the outside of the casing.

A body belt formed from an elastic web made according to my processcomprises a length of elastic body belting web provided with suitablefasteninoa means, which may be of any desired kin In Fig. 9 I havevshown the belt with one end tapered to form a tongue. The other end isprovided with` a buckle and a pair of keepers or straps of leather.

The elastic body belting web consists of an interior elastic portion Band an exterior casin A wholly inclosing the elastic portion andg socrimped or convoluted that any unitary length of the completed beltingweb will contain a length of casing which is greater than such unitarylength by the amount which the belting is intended to stretch. Further,the elastic portion is firmly cemented to the casing at all points ofits surface.

It is important that the elastic portion of the completed belt be suchthat it will stretch to the extent necessary to permit the requiredmovements of the wearer without injury to the elastic material, and atthe same time this elastic portion, when sostretched as stated. mustgive an elastic reaction or pull suficient to properly clamp the garmentto the bodv of the wearer. An important feature of the inventionconsists in making the elastic web portion of that type of materialgenerally known as elastic webbing, this consistin of a textile fabricgenerally woven or knitted and containing india rubber strands orthreads which are combined with suitable strands of flexible fibrousmaterial. such, for example` as wool. cotton, hemp, linen or the like.in practice it is advisable that this elastic webbing be manufactured ina continuous web of the proper width for the belt, since in'this way isobtained a better union of the casing around the selvage edges of theelastic webbing.

lt is to be understood that the term elastic web as used herein is ageneric term defining any kind of resilient band or strip of indefinitelength, such, for example, as a strip Moreover, l

Lasaeoi of sheet rubber. On the o-ther hand, the term elastic webbingrefers to a. special type of elastic web, as already explained.

The casing for the belt is most advantageously of leather for the reasonthat such material may be softened and then crimped, convoluted orcorrugated and will thereafter harden in such a way as to maintain thecrimps, convolutions or corrugations. Owing to the adherence of thiscasing to the elastic web, it is impossible to strain the elasticmaterial beyond the desired limit predeten mined in the manufacture ofthe belt, because the amount to which the elastic web may be stretchedin the completed belt is limited by the extent to which the casing maybe stretched and this is deteri'nined by the amount of surplus materialof the casing taken up in the crilnps, convolutions or vcorrugations.

will now describe one specific form of my improved process, it beingunderstood that the invention is not to be limited 'to the exactdetails'of the process as described but is a broad invention, as fullypointed out in the claims. ln this description, the casing is assumedtobe made of leather-eut from the desired material.

The sides of leather are suitablyY slit into strips of a width abouttwice the width which the completed belt is to have plus a suitableamount to form an overlap. These leather strips are then skived orchamfered on both edges on one side. but only on one edge on theopposite side. This will be clear from Fig. 8. Generally the side of theleather which is to be inside the belt has its two edges skived orchamfered, while the side which is to be outside has only one edgechamfered. rfhc strips thus prepared are cemented together end to end toform a long web of leather.

The side of the leather web which is to be inside the belt is coatedwith a suitable ad.h hesive composition, and most advantageously with arubber cement, which is allowed to set or 'dry to a. condition where itl is tacky.

The chainfered portion of the outside of the web is also provided with'a coating of adhesive material such as above described. lWhere theouter surface of the web is colo red` for example, black or tan, theadhesive applied to its chamfered edge portion is colored with suitablecoloring material, so that the ehamfered portion when coated withadhesive will have the same color as the remaining outside surface.

long web of suitable elastic material, and particularly the elastictextile such as is known in the trade as elasticv webbing, of a widthsomewhat less than the width of the completed belt is stretched to thedesired tent and laid against the central portion of the inside of theleather web. The two sides of the leather are folded over the elastii`web, the sides of the leather overlapping each other to the extent ofthe skiving or chamfering of the edges, whereby a soarfed joint isformed longitudinally of the belt and along the central line of thatside of the belt which is to be next the wearer. In this folding it isimportant that the casing be folded in close Contact with thelongitudinal edges ofthe elastic web. i lVhere the webbing is woven ofthe proper width with the usual selvage edges, the folding of the casingin close contact therewith results in cementing` the edge of the foldedcasing to the textile fabric constituting the selvage of the webbing, sothat when the belting is completed, no puckering will occur along theedges.

rlhe belt is now submitted to a heavy pressure, whereby the joined edgesare pressed into close contact with and firmly secured to each other,while at the same time the adhesive inside of the leather is firmlyunited to the elastic webbing. During all of this time the elasticwebbingis retained in its stretched condition. l/Vhile still retainingthe elastic webbing in this stretched condition the leather ismoistened, for example, with water, and then subjected to the action ofa suitable crimping or corrugating device whereby it is provided withsuitable erimps or corrugations extending generally transverse to thelength of the belt: lnstead of straight corrugations extending at rightangles to the length of the belt, the. crimps or eorrugations may beshort and irregular and, if desired, may be in the form of any suitablepattern 01 grain. The crimps or corrugations may be done by suit abledies, but most advantageously by a pair of roller dies through which theweb is passed.

After the leather has been crimped, the tension on the elastic webbingis released. Owing to the firm attachment of the elastic webbing to theinside of the leather in which the webbing is incased and because of thecrimps or corrugations, the release of the tension on the elasticwebbing permits the latter to contract longitudinally and therebycontract the leather casing to the same extent.

rllhe product of the process thus far described is a long web of elasticmaterial comprising a central flat core of elastic webbinw entirelyinclosed in and firmly combined with a casing of leather, the elasticityof the completed web beingdue to the fact that owing to the crimps,corrugations or rugosities of the leather, the latter can be extended tothe full extent to which the elastic webbing itself may properly bestretched.

Furthermore, the leather prevents the elastic webbing from beingstretched to such an extent as would weaken such webbing.

The long web is now cut into lengths suitable for making belts and theselengths are finished in the usual way, as, for example. by forming atongue at one end and attaching a buckle and tongue socket or slide atthe other end. as shown, for example, in Fig. 9.

ln carrying out the process on a large scale, suitable apparatus isprovided.

The apparatus shown in the accompanying drawings is the same as thatshown and described in my Patent No. 1,242,698, granted Getober 9, 1917.The machine shown in Fig. 1G serves for the purpose of applying adhesiveto the inside of the-leather.

`When the web is passed beneath the tank T and the latter is providedwith a suitable adhesive, such for example, as the usual viscous orsemiiluid rubber cement. the latter will flow ou-t through the slit inthe bottom of the box on to the leather web which is passino, beneathit. rlhe coated web is passed around a roller 9 at some distance fromthe table whereby the adhesive material has time to set and thence isbrought back to the winding up device located in the frame 1.

The leather web, coated on one side with adhesive is brought to the drum11 together with the web C of-cloth, muslin, or the like, the two websbeing wound together on the drum 11 by turning the crank.12, 'the fabricweb C being next to that side of the leather web which is coatedwithadhesive.

Furthermore, the leather web is advantageously wound so that itsadhesive side faces outward.

When a reel has been lled with the webs, it is transferred to themachine for applying the adhesive to the single skived or chamfered edgeof the leather web. This machine is similar to the one 'just describedwith the exception that instead of a flat table for the leather web topass over beneath the tank, there is provided an endless apron device.rThis machine is illustrated in Fig. 11 and fully described in my saidPatent No. 1,242,698. The leather web A. has' its adhesive side running`in contact with the endless apron and the latter is moved by theadhesion between the apron and the leather web. As the endless apronturns downward over its rear roller it pulls itself awa -v from theleather web, Awhile the latter passes off to the roller 9. around thesame and back to a winding-up device where itis wound up with a web of'fabric-by an apparatus like that already described.

The adhesive applied to the outside of the leather web is usually arubber ('eiuent and is colored, if necessary, to match the color of theoutside of the leather.

rl`he reel or drum of wound leather and fabric webs. A and C, is takento a machine for combining` the leather and elastic webs.

This machine, illustrated in Figs. l to (3, and fully described in mysaid Patent No. 1,242,698 comprises a frame 22 provided with spindles onwhich to mount the reels of leather web A and elastic web B. The spindlefor the elastic web is above that for the leather web. Each spindlecomprises a shaft 23 mounted in suitable` bearings 23a and having asquared end portion projecting horizontally and arranged to enter thesquared central opening ofthe web reels. The shaft for the reel ofelastic web is provided with a suitable friction device or brake, andwith a pair of pressure rollers as indicated at 30 and 3l.

The rollers 30, and 31 are driven by suitable means.

ln front of the pressing rollers is a table 38, upon which is mounted afolder mechanism while behind the pressure rollers 30 and 31`are locatedtwo guide rollers 45 and 46. At the lower part of the machine is a tank47 arranged to receive the liquid for softening the leather', usuallywater and with suitable means for guiding the web.

This machine is also provided with a pair of crimping or corrugatingrollers as indicated at 52 and 53, the upper roller being yieldinglymounted in the same way as the upper pressing roller 3l.

ln operation, the leather web A and the elastic web B are led from theirseparate reels to and through the folding device, the

leather web being below elastic web, both webs being pressed beneath`the tongue 40. The elastic web is kept under such a tension by-its brakeor friction device that said web is stretched to the maximum extent towhich it will be stretched in use.

ln the folding device the leather web is folded up at each side of theelastic web and then folded over so that one edge laps over the other.

From the folder the `web goes to the proper groove of the pressingrollers and thence over the first guide roller 45. down into the tank 47around the guide roller 50 therein, thence up over the guide roller 46,to and between the crimping rollers 52 and 53. As` the pressing andcrimping rollers are geared together. the elastic web B remains undertension from the time it leaves its reel until the completed bodybelting web pas the crimping rollers.

after leaving the latter rollers. the elastic web contracts so that thetension of the elastic web is relieved. Bv this contraction it `horlensthe crimped leather. as hereinbefore explained, and is ready for use inmaking body belts4 The body belting Web is then cut into the desiredlengths, and these lengths formed into belts, in the manner alreadydescribed.

Within the term criinpingfi' as hereinbefore and hereinafter used, Iintend to include the embossing or stamping of the leather with anornamental or other design.

What is claimed is:

l. The process of making an elastic body belting web, Which consists incementin a stretched elastic web in a casing of ieX1 le material,crimping the easing and its contained elastic Web in a directiontransverse to the direction in which the elastic Web is stretched andWhile the web is under tension, and subsequently releasing the elasticweb from its tension whereby the casing is con tracted in length. i

2. The process of -making anelastic body belting Web, Which consists incementing a stretched elastic webbing in a easing of flexible materialfolded in close contact with the longitudinal edges of the elasticwebbing, 25

and subsequently releasing the elastic Web from its tension, whereby thecasing is contracted in length.

In testimony whereof, I have hereunto set my hand.

JOSEPH JACGBS.

